TCP Port 9997 – palace-6

About TCP Port 9997

The Internet Assigned Numbers Authority (IANA) registers port 9997 for palace-6. The IANA description reads: ‘Palace-6’. This port is referenced in 3 IDS rules and exhibits low malware activity in monitored traffic.

IDS Rule References

3 IDS / security rules reference TCP port 9997. Presence in IDS rules does not mean traffic on this port is malicious. These are patterns security tools monitor.

Rule categories (top 2): command-and-control (2), targeted-activity (1).

Sample rule descriptions for TCP port 9997:

• ET MALWARE Win32/Recslurp.D C2 Request (no alert)
• ET MALWARE Win32/Recslurp.D C2 Response
• ET MALWARE APT33/CharmingKitten Shellcode Communicating with CnC

Malware Activity

Some malware indicators are observed on this port.

3 of 3 IDS rules for TCP port 9997 involve malware activity.

Families observed (top 1): Win32_Recslurp_D (2).

Data Sources

This information is compiled from: IANA Service Name and Transport Protocol Port Number Registry and Emerging Threats Open Ruleset (BSD 2-Clause / GPLv2 per SID range).